more than 8,000 people died. very few stories are more divisive than number seven on the list. >> relations between united states and iran are poised after -- >> an historic agreement to stop iran from developing nuclear weapons. some hailing as a major victory for diplomacy. >> there's a reason why 99% of the world thinks this is a good deal. it's because it's a good deal. >> others calling it a deal with the devil. >> this deal doesn't make peace more likely. it makes war more likely. >> powerful words from the leader of israel cht even more powerful, this moment on the floor of the united nations. 44 seconds of uncomfortable silence signifying what he says is the deafening violence toward iran from the west. and number six, the bloody war rages in syria and iraq. sprawling mess in a dangerous proxy war. u.s.-led coalition air strikes pound isis targets in syria. russia says it's bombing isis targets as well.